Counterbalanced band wheel



Nov. 16 1926.

C. PAGGI COUNTERBALANCED BAND WHEEL Filed Jan. 25, 1926 attorney Patented Nov. Q6, 1926.I

f PATENT OFFICE.

CHARLES PAGGI, 0F BEAUMONT,

COUNTEBBALANCED BAND WHEEL.

Application filed January 25, 1926.v Serial No. 83,661.

,in such a construction in which ,the counterbalance weights ma be Varied in orderto meet practical con itions in a particular well.

Another object ofthe invention consists in the provisionv of means which will relieve the' wheel structure of much ofA the centrifugal force caused by the counter-balance weights on the band wheel.

AOther objects and advantages of the invention will be apparent from the following description when taken in connection with the accompanying drawings, in. which:

Figure l is a side elevation of one embodiment of the invention applied to a band wheel, and; i k

Figure 2 is an enlarged section taken on the line 2 2 of Fig. 1.,

Referring to the drawings in greater detail the numeral l indicates the axle of the band wheel or other driving gear 2, and which may be mounted in any conventional type of bearings (not shown) supported above the well pump.

In the present embodiment of the invention the wheel 2 is provided with a `wide smooth tread 3 on which is mounted a band or belts/1 which is operatedfrom any suitable source of power (not shown) It will be understood of course, that a gear wheel and chain may be substituted for these elementsii:` found desirable.

Associated with the wheel 2 is a'crank or arm 5 with which a ptman 6 is adjustably connected. This pitman is, of course, operatively connected with thel polish or sucker rod of the pump in the usual manner. s

vOne of the diiculties encountered in operating pumps is that unless the sucker rod is reciprocated rather slowly Ithe same will bebroken due tothe sudden strains or jars placed thereon by the operating mechanlsm. By the present construction about to be described these sudden strainsare substantialwheel by means of bolts 8, and are each composed o a plurality of L-shaped sections 9 which lmay be stacked one upon another until sutcient weight for the particular pump is supplied. `When the proper number ot sections are applied to the wheel the bolts 8 are inserted through the holes provided or that purpose and the counter-balance thus locked to the wheel.

Obviously, considerable centrifugal force is generated when the wheel, which is sometimes composed of wood, rotates rapidly,

therefore, it has been found desirable to provide means to eliminate this strain from the wheel. 'I`o this end a tieJ rod -10 is provided lwhich has its respective ends anchored in the short arms 11 of the l.shaped weights and its intermediate portion encircling a portion of the axle 1, thereby transmitting the centrifugal force to the axle and relieving the strain on the wheel 2 and bolts 8.

-From an inspectionf Figure 1 ofl the drawings it ,will be observed that the weights 7 are disposed adjacent each side of the crank arm 5 and` thereb provide the maximum e'ect in counteralancing the sucker rod and in cushioning and counter` balancing the pull of the up and down movement of the sucker rod in the well casing. Thus it will be apparent that suddenstrains or jars on the sucker rod are obviated.

From the foregoing description'taken in connection with the accompanying drawing it will be seen that an exceedingly simple construction of band wheel has been devised in which the counter-balance weights are ar 'ranged so as to eliminate strains on the well mechanism', that the counter-balance Weights are so constructed that they may be varied to suit varying conditions in operation, and

that the centrifugal force generated by the have described what I now believe to be the best embodiment of the invention, but I do not wi'sh to be understood thereby aslimiting myself or the scope of the invention, as many changes and modilications may be made without departing from the spirit of the invention; all such I aim to include in thescope of the appended claims.

What I claim as new and desireto secure by Letters Patent is:

1. A pump jack for wells including a wheel mounted for rotation, a crank associated with said wheel, a pair of counter-balance Weights connected to said wheel and means connected to said weights and engaging the Wheel aXle to relieve the wheel of the centrifugal force of said weights.

2. A pump jack for Wells including a wheel `mounted for rotation, a crank associated therewith, a pair of counter-balance weights connected to said wheel, and a tie rod connecting said weights.

3. A pump. jack for wells including a wheel mounted' for rotation, a crank associated therewith, a pair of counter-balance weights connected to said wheel adjacent said crank and disposed on opposite sides of the latter, and a tie rod connecting said Welights and encircling a portion of the wheel ax e.

4. A pump .jack for wells including a wheel mounted for rotation, a crank associated therewith, a pair of sectional counterbalance weights connected to said Wheel adjacent said crank, eachnweight being substantially L-shaped in section, and a tie rod having its ends anchored in the shorterxarms of said L-shaped weights and encircling a portion of the wheel axle.

CHARLES meer. 

